Burner



` mmm May l5, 1923.

C: J. SHERWOOD BURNER Filed Sept. lO, 1919 IN VENTOR v M 0 W m y nPatented May l5, 1923.

referia 'o eaLYLn J. suns-Woon, or SAN raaNCreCo, eriLrroaNi-a, AssrGNoR'ro coENco., oF

SAN FRANCISCO, oargrnoaNrA, CORPORATION or CALrronNrA.

Y BURNER.

Application filed September 10, 1919; Serial No. 322,938.

To al! 107mm t may concer/n.'

Be it known that I, CARLYLE J. SHnRWooD, a citizen of the UnitedStates,residing at the city and county of San Francisco and-Stateof'California. have inventednevv and useful improvements in Burners, ofwhich the following is a specification.

This invention relates to an oil burner,v

variable load are prohibitive in cost when .considering smallinstallations.

One of the objects of the presen-t invention is to provide a steamato-mizing fuel burner employing `oil or the like which `issuitableeither for large -or small installations and .which isprovidedivith means in the burner proper actuated either'by the oil`oratomizing agent under pressure, or both, for automatically varying'`the sizeof the fires or the quantity of fuel burned, therebyeliminatingthe necessity of employing;Y automatic .controlling devicessuch as thermo-` stats, lpressure reducing valves, etc. and other ,extraattachments 4now employed in the `larger plants,` and. furthermore, per-Init-ting economical fuel regulation Whether it be in large Cr smallinstallations. f Another object ofthe invention is to pro- `VidelaAmanual control whereby the quantity of fuel or atomizing agent employedmay be regulated independent ofveach otherio'r in unison.

Eurther objects will hereinafterappear. Theinvention consists of theparts andthe construction, .combination and arrangement of parts ashereinafter more fully described andclairned, havinga reference to theaccompanying drawings, in Which- Fig. 1 isa central, vertical,longitudinal section through `the burner and the automatic mechanismWherebyit is actuated.

Fig. 2 is a cross section on the line2--2 .of Fglthe Fig. 3 is -a crosssection on the line `3--3 of Fig. 1.

Fig. 4f is a front `view of the burner nozzle. Referring to thedra-Wings in detail and particularly to Fig. 1, A indicates a casingwhich is provided with tivo intake openings, one `for oil, as indicatedat 2, and one for steam, as indicated at 3. The opening' 3 communicateswith a chamber 12 and the openinlrQ with a chamber 2', said chambersbeing formed Within the casing A as shown.

A -aecured tothe toi-Ward end of the casing or screwed into the same, asshown at 4, is a pipe 5 on the outer end lof which is secured a burnernozzle 6 of suitable construction. `Slidablymoiinted interior of thenozzle '6 is a valve 7, in the outer surface of which is formed a seriesof tapering grooves or slots 8. The valve 7 is secured to the thread endof a corrugated expansible tube `f9, the opposite end of which issecured Withina central `nipple 10, said'nipple being threaded into theWall ofcha'mber 1 2.

The oil `inlet supplying connection 2 through the chamber 2 communicatesWith the pipe 5 or an annular passage 11 formed exterior of thecorrugated expansible tube While the steam supplying connectioncommunicates through the chamber 12 With the interior ofthe corrugatedtube or 4annular passage 14 formed Within the tube. Positioned centrallyof the tube and extending longitudinally through the same is a valvestem 15. The forward end of this stem passes through the valve 7 and`grooves 16 somewhat similar to those shown at 8 are `formed in thestem', these grooves serving` the `function of regulating1 the volume`of atomi/zingsteam employed, as will hereinafter be described While thelgrooves 8 serve the `function of raqiilatingthe quantity of oil or fuelconsumed. The opposite end of stem 15 extends through the centralchamber 12 and a stuffing box 17 While the extreme outer end or the`portion exterior of the stufling box passes through a nut 18. The nutproper is turnably mounted in a bracket extension 19 formed on thecasing A and `it may be locked againstturning movement bymeans of alockinut 20. The nut 18 is threaded exteriorly for the reception of thelock nut 2O and interiorly to engage threads 21formedon the stem. Thestem is otherwise provided With ya .handle 22, the

\ that I have provided means for automatifunction of which willhereinafter be described.

The (,orrugations formed in the expansible tube are thread-like information and the purpose of employing an expansible tube as shown is toprovide means for automatically regulating the discharge of oil andsteam through the valve 7, that is, variations in pressure either insteam or oil, or in both, when passing through the annular passages 11and l-lwill cause extension or contraction ofthe expansihle tube,by theforce which it exerts against the corrugated sides of the tube, plus thepressure against the valve 7 and thereby moving the valve 7 andconsequently regulating` the discharge of steam and oil passing throughthe burner nozzle 6.

For the purpose of regulating the expansible action of the tube 9. Iprovide a key 28.

`This key is carried by the stem 'l5 and is in reality nothing more orless than the plate (see Figs. l and 2) which passes through a slot 24-formed in the stem l5, the outer ends of the plate being provided withthreadlilre projections to engage the thread-like corrugations formed inthe tube. The pitch existing between the threads formed bythe corrugatedtube 9 and threaded key 23 is equal to the pitch of threads between thestem 15 and nut 18.

The plate or key 23 may be turned in unison with the stem or itsposition may be advanced or retracted within the tube; and it may beadvanced orretracted in unison with the stem l5 without turning the stemif it is desired to adjust the position of the valve 7 with relation tothe nozzle 6, and thus,

increase or decrease the port area. formedv between the nozzle and thegrooves 6.

In actual operation, it can be seen that I have provided an atomizingburner capable of handling oil or similar fuel, and, further,

cally regulating the discharge of the fuel and for manually regulatingthe discharge of fuel. Similarly, that an atomizing agent may beemployed and that the volume or quantity employed may be automaticallyor manually controlled. rThis is accomplished in the following mannerz'lli/'ith the burner disposed at the entrance of a furnace box under aboiler, it is obviousthat the burner is connected with a source of oilsupply under pressure, as a pump not here shown; similarly, that theatomizing agent or steam employed will be supplied by a pipe l 3a`directly coniiectedwith the boiler. Vheu oil and steam are delivered tothe burner, it

can be seen that the oil will escape through vthe annular passage 11,the channels 8 and the yatomizing nozzle 6. Similarly, that the steamadmitted will escape through the central chamber 12, the annular passage14, the grooves i6 and the nozzle 6, the atomizing Leffect beingobtained when the Steam and oil meet within the nozzle and dischargethrough the opening 6l formed therein.

Any variation in steam or oil pressure will have a certain effect on theeXpa-nsible tube 9, that is, the valve 7 sei-ves as a partial closurefor the pipe 5 and the expansible tube 9, and it is therefore obviousthat variation in pressure will tend to expand or contract the tube 9 asbefore described, thereby imparting a movement to the valve 7 which willautomatically vary the iiow of steam and oil through the nozzle. Anyincrease in pressure will cause extension of the tube and forwardmovement of the valve. rfheports formed between the grooves 8 and thenozzle will thereby be reduced in area and similarly the ports formedbetween the grooves 16 and the forward end of the valve will be reduced.A decrease in pressure of oil or steam will permit partial contractionof the tube and thereby retraction of the valve which increases theareas referred to and consequently the volume or quantity of steam andoil discharged.

The position of the valve 7 in Figi, is such that eXtreme inwardmovement to the left has been reached. The grooves 8 formed in the valveare shallow at their inner ends and taper angularlv outward. Conversely,grooves 16 are shallow at their outer ends and have their largest areaand depth at their inner ends.

For purposes of explanation it might be stated that the admission ofsteam to the inner ends of the grooves 16 may be considered as constant,and if such is the casezthe discharge of steam will then becontrolled'by the area presented at the outer ends of the grooves. Forinstance if valve 7 moves fo'rwardly or to the right,v see Fig. l, thedischarge area at the outer ends of the grooves 16 willdecrease andhence theflow of steam will be lessened. The discharge of oil will alsoybe less as the shallow inner ends of the grooves 8 will decrease inareaand therefore decrease the amount of oil discharged. Again, if themovement of the valve 7 is to the left, the area of the groovesS willincrease at the inner end and a larger quantity of oil will discharge.The area presented by the outer ends ofthe grooves l6will similarlyincrease and the volume of steam discharging will increase;

From the foregoing description it should be apparent that positiveautomatic regulationv of the fuel and the atomizing agent employed istherefore obtained without resortfeature of the invention, it is obviousAthat hand regulation isdesirable. Such regulation is easily obtainedinthe present instance,

and is accomplished by reitherturning the stein or by movine itbcdilyinaloiigitudisa nel direction. lt it is desired to turn the .stein 15,itis merely necessary to tuinthe handle; .Thestein may then be retractedlie:regulated'Without disturbing the oil tlovr.

Again, it it Ais desired to increase or de- ;crease theV uantitv of oildischaroed. it is merely necessary-to sli glitly unscreiv 'he loci;

the l nut and turn the ,nut 18 While holding `the 'tube '9 existing'betvveen the lrey 23 and .nipple 10 has a tendency to always draw thestem 15 tirava-rally and therefore the `shoulder 'of the nut 18 iscontinuously drawn against the bracket 19. Forthis reason when the iiut18 isiturned and the handle 22 ,held stationary, the stein 15 must beretracted or projected depending .upon the direction Yin which the nut18 is turned. rlhe .bodily movement of the stem 15 ivill likeivise dranYthe lrey .which vin turn through :the tube 9 vwill likewise move thevalve 7 `with relation to the nozzle 6, thereby decreasing or'increasing the `area formed between Athe nozzle and grooves 8, andconsequently increasing and decreasing the quantity ot oil vdischargedWithout increasing or decreasingthe iiovv ot' the fatomizing agent.

.lt can, therefore, be seen lthat means are proifided `for manuallyincreasingand decreasing,` the tloiv ot the atomizing,` agent `or tor`manually increasing` or .decreasing` the lion" ot the tuel discharge`and that these regulations may be obtained independently oi" eachother. Again, it is possible to increase or decrease the tloiv ofthea'toiniiiing agent and fuel employed in unison either by automaticaction or by inanual operation, the automatic actionbeing obtained bythe i en pansiblc action of the tube 9 and the manual operation byturning' the handle anais andthe nut 18 in unison, such nioif'einentpermitting retraction or projection of 'the i'alve andthe stem inunison.V

Vilhile the foregoing' description describes the invention inncombination ivith a tuel burner, l Wish it understood that the auto`matic 'and manual control here produced may be' used tor variouspurposes, for instance, in the governing ot' fuel and oil pumps, Waterpumps, steam engines, tui'- -bines, etc. or 'it can be generally appliedfor the automatic. and manual regulation et the loiv of any fluidrelative to changes in pressure of thatfluid changes in pre iiaiidle22stationary. :The tension of burner as here shoivn Will supply the needsof either small orlarge boiler installa` 'tions Iand should .materiallyincrease the `economy 'oit fuel employed and insure a steady boilerpressure under 'variable load asthe operation oi theburner will beentirely' automatic once installed.

Another important feature ot the present invention is the thro zeiormation ot the corrugations in the expansible tube and the hey Withinthe tube engagingv the thread-like corrugations. Byre'l-erringtoFig. 1it will be seen `that the hey is secured in the stein and is thereforeturnable `in unison ivith the stem Within the/tubel` or itmay he bodilyadvanced or retracted in unison with the stein. This last named is ot'great iinportance as it provides a means whereby the .expansibie actionof the tube may be ad- `justed. By providing this means it is possibleto regulate the burner sovthatit is equally sensitive and automatic inaction, whether operating; under duid pressures ot' ou pounds or 150pounds, that is, it the burner is opei'atedunder a comparatively lonYpressure,

say, Gllpounds, is obvious that a more sensitive expansible member isrequired under such conditions. rllhe key will theretore assume aposition adjacent the fixed end of the expansible tube. It the fluid isdelivered tothe burner under high pressures, say 150 pounds or more, "itisobvious that the expansibleaction of the tube must .be decreased, asthe movement would otherwise be too great. i :it is therefore onlynecessary to advance the lrey .with relation to the tube `so that itlivill assume a position closer to the valve whereby the luidloiv isregulated. In other ivords, ashorter section ot tubing `is depended uponfor automatic ico'ulation When operating under liivcjh ni'essuiesand alonger section ti e i is eiiiirloye-ffl when Working under louer iressures. i

lllhile the apparatus here is incre or less specitic in construction, iivi. understood that various changes iii the ''."oi'in` proportion andici-al details ci' de in may be resorted to iiitliinthe scope or theappended claims. tflimilarly, tl

,l materials and linish o: the several parts employed ma. be such :isthe experience and judgment ot the manufacturer may dictate or varyingconditions may demand.

Having thus described iny invention, what I claim and desire to secureby Letters Patent is: V

1. An automatic fluid flor.' regulator comprising a casing, said casing,having,- two separate chambers formed therein, means for admitting afluidunder pressure to one chamber, means for admitting another fluidunder pressure to the other chamber, a discharge pipe cominonicatingfWith one chainber, discharge nozzle on' said pipe, an eX* pansibletubeconnected With the Walls of second-named chamber at its one end and its'other end extending to the discharge `nozzle,said tube adapted to beexpanded or contracted with variation in pressure of both Vor. eitherfluid, and a valve actuated by said expanding and contracting movementadapted to regulate the discharge of both fluids.

vco

2. An automatic fluid flow regulator comprising a casing, said casinghaving two separate chambers formedtherein, means for admitting a fluidunder pressure to one chamber, means for admitting another` fluid underpressure to the other chamber, adischarge pipe communicating with onechamber, a discharge knozzle on said pipe, an eX- pansible tubeconnected with the second- "named chamber and with the discharge nozzle,said tube adapted to be expanded or contracted with variation inpressure of both or either fluid, a valve actuated by said expanding andcontracting movement adapted to regulate the discharge of both fluids,and manually actuated means for adrjusting the position of the valveindependent ftube adapted to be expanded or contracted with variationsin pressure of either or both fluids, and a valve attached to said tubeadapted to automatically regulate the discharge of the fluids.

4f. An automatic fluid flow regulator comprising a casing having twoseparate cham* bers formed therein, means for admitting a fluid underpressure to one chamber, meansk for admitting fluid under pressure tothe other chamber, a discharge pipe connected with the first-namedchamber, a discharge nozzle on said pipe, a corrugated expansible tubewithin the discharge pipe communicating with the second-named chamber,said tube adapted to be expanded or contracted .with variations inpressure of either or both fluids, a valve attached to said tube adaptedto` automatically regulate the discharge of the fluids, andmanually-actuated means operable independent of the erpansible tube foradjusting the position of the valve to increase or decrease thedischarge of either fluid or both. i

- `5. An automatic fluid flow regulator comprising a casing having twoseparate chambers formedthereim means for admitting a fluid underpressure to one chamber, means for admitting a uid Vunder pressure tothe other chamber, a discharge pipe connected with the first-namedVchamber, a discharge nozzle on said pipe, a corrugated expansible tubewithin the discharge pipe communicating withthe second-named chamber,said tube adapted to be expanded or contracted with variations inpressureof either or both fluids, a valve attached to said tube adaptedto automatically regulate the discharge of the fluids, a stem extendinglongitudinally through. the casing, the expansible tube and the valve,and manually actuated kmeans for moving the stem and valvelongitudinally and for turning the stem to advance or retract the samewith relation tothe valve.

6. An automatic fluid flow regulator comprising a casing having twoseparate chambers formed therein, a discharge pipe connected with one ofsaid chambers, a dis` charge nozzle on the end of said pipe, means foradmitting a fluid under pressure to the first-named chamber, means foradmitting a fluid under `pressure to the second-named chamber, a valvehaving a central passage formed therein and a series of grooves on itsouter surface, said valve co-operating with the nozzle, means forconveying the fluid under pressure delivered to the secondnamed chamberand discharging the same through the central passage inthe valve, meansin said passage for regulating the discharge of the second-namedA fluid,said means comprising a rod extendinglongitudinally through the casing,the discharge pipeand the valve, and a series of grooves .formed in theouter end of the stem and communicating with the central passage formedin the valve.

7. An automatic fluid flow regulator comprising a casing, means foradmitting a fluid under pressure. a discharge pipe, a discharge nozzleAfor the escape of the iluid, a valve having a series of grooves formedin its outer surface co-operating with the nozzle to regulate thedischarge of the fluid, an expansible tube in the casing and in thedischarge pipe adapted to bef expanded or contracted by variations inthe fluid pressure and means for transmitting said eX- panding orcontracting movement ofthetube to automatically regulate the position ofthe valve.

8. An automatic fluid flow regulator comprising a casing, means foradmitting a fluid under pressure, a discharge pipe, a discharge nozzle-for the escape of the fluid, a valve having series'of grooves formed inits outer surface co-operating with the nozzle to regulate the dischargeof the fluid, au expansible tube in the casing and in the discharge pipeadapted to be expanded or contracted by variations in the fluidpressure, said tube being rigidly secured at one end and 'secured to thevalve at the opposite end to automatically change the position of thevalve and manually actuated means for contracting or extending the tubeto adjust the position of the valve independent of the automaticextension or contraction of the tube.

9. An automatic fluid flow regulator com` prising a casing, means foradmitting a fluid under pressure, a discharge pipe, a discharge nozzlefor the escape of the fluid, a valve having a series of grooves formedin its outer surface (2o-operating with the nozzle to regulate thedischarge of the fluid, an eX- pansible tube in the casing and in thedischarge pipe adapted to be expanded or contracted by variations in thefluid pressure, said tube being rigidly secured at one end and securedto the valve at the opposite end to automatically change the position ofthe valve, means for admitting a second fluid under pressure, a centralopening` formed in the valve through which said second fluid is adaptedto discharge, said second-named fluid passing through the expansibletube when discharging, and means actuated by the expanding andcontracting action of the tube for automatically regulating the discharge of the second-named fluid.

l0. An automatic fluid flow regulator coniprising a casing, means foradmitting a fluid under pressure, a discharge pipe, a discharge nozzlefor the escape of the fluid, a valve having a series of grooves formedin its outer surface co-operating with the nozzle to' regulate thedischarge of the fluid, an eX- pansible tube in the casing and in thedischarge pipe adapted to be expanded or conn tracted by variations inthe fluid pressure, said tube being rigidly secured at one end andsecured to the valve at the opposite end to automatically change theposition of the valve, means for admitting a second fluid underpressure, a central opening formed in the valve through Which saidsecond fluid is adapted to discharge, said second-named fluid passingthrough the expansible tube When discharging, a rod extendinglongitudinally through the casing, the eXpansible tube and the centralpassage in the valve,

grooves formed in the rod, said grooveseX-y tending through the centralpassage in the valve 'or the escape of the second-named fluid, andmanually actuated means for retracting the rod, the tube and the valveor for projecting the same With relation to the nozzle.

11. An automatic fluid flovv regulator comprising a casing, means foradmitting a fluid under pressure, a discharge pipe, a discharge nozzlefor the escape of the fluid, a valve having a series of grooves formedin its outer surface co-operating with the nozzle to regulate thedischarge, an expansible tube adapted to be expanded or contracted byvariations in the fluid pressure, said tube being rigidly secured at oneend and secured to the valve at the opposite end to automatically changethe position of the valve, means for admitting a second fluid underpressure, a central opening formed in the valve through which saidsecond fluid is adapted to discharge, said second-named fluid passingthrough the expansible tube when discharging, a rod extendinglongitudinally through the casing, the expansible tube and the centralpassage in the valve, grooves formed in the rod, said grooves extendingthrough the central passage in the valve for the escape of thesecond-named fluid, and

manually actuated means for retracting the rod, the tube and the valve,or for proj ecting the same with relation to the nozzle, said means alsoadapted to project or retract the rod independently of the tube andvalve.

l2. An automatic fluid fioW regulator comprising a casing having anoutlet opening' formed therein, means for admitting the fluid underpressure, a valve adapted to regulate the discharge of fluid through theoutlet opening, a corrugated j eXpansible tube in the casing, said tubehaving corrugations of thread-like formation, means for rigidly securingthe tube at one end, means securing the opposite end of' the tube to thevalve, a

rod entering the tube, a threaded key on the rod engaging thethread-like corrugations in the tube, and n'ieans for securing the rodand key against movement, and varying the eXpansible length of the tube.

13. In a device of the character described, a casing, a corrugated tubeWithin said casing, means for securing one end of the tube, means -fordelivering a liquid under pressure to the interior of the tube, andmeans for delivering a separate liquid under pressure to the casing, andvalve member secured to the end of the tube operable for simultaneouslydecreasing or increasing the flow of a liquid from the tube and casing.

In testimony whereof l havehereunto set my hand in the presence of tivosubscribing Witnesses. i

CARLYLE J. SHERWOOD. VWitnesses Trios. CAsrBnRc, WM. H. BAUER.

